One Piece Odyssee

Kaidou is a middle-aged man who cuts an imposing figure due to his extreme height of 710 cm and the bulk of his muscles. Overly top-heavy in build, he has a well-muscled torso with wide-set shoulders, thick arms, and somewhat out-of-proportion legs; far less heavily built than his arms yet about the same length. Kaidou's head, is disproportionally small as well and has a massive pair of gray-white, sharp-pointed horns coming out of its sides, curving slightly to the front, then upward. He has a longish face with a heavy, hairless brow ridge topping sharp, often bloodshot eyes, plus, a hook nose and a large, full-lipped mouth. Kaidou is near-always seen frownin. His black hair consists of an unruly, mostly swept-back mane down to his mid-back, which forms distinctly flat, rectangular locks of which some fall down near the front, over his ears, or jut upward. His facial hair is done in a wavy, waist-length Fu Manchu mustache that pairs with a spiked goatee across his chin.

Kaidou is a merciless, aggressive, and confident warrior who never misses an opportunity to gain an advantage in war. He suffers from bouts of apathy and boredom, harboring a general sense of unconcern for most things including the very nature of the world and the lives of himself and his subordinates. He keeps a grumpy disposition with little pleasure and excitement in his life and is constantly frowning most of the time. As such, he craves excitement and chaos, wanting to start the largest war in the world because he felt it was too mundane. Apparently, Kaidou always had issues with the world he lived in, particularly the World Nobles, whose authority he did not respect due to his beliefs that the true worth of someone could only be gauged in the battlefield

He is one of the four Yonkos and the king of Wano Kuni.